is 2 16818779 - 1
has 5062957 decimal digits
takes 9.197 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2671.766762.6866%----1.766762.6866%0.0000%
PrimeNet2650.433861.5385%8000024000000.16364.5234%0.597463.2782%1.7398%
GPU722697.098463.7681%12000032000000.22823.2903%7.326664.9602%1.1921%
Difference-2-5.3317-1.0815%-120000-3200000-0.2282-3.2903%-5.5599-2.2737%-1.1921%

Known prime factors (4 factors, 168.0 bits, 0.00099900% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1681877933637559825.0041
1
-112.658e-137.929e-71.614e-6
168187794953130415511238.85014725
52 × 19 × 31
2008-09-0825312.585e-92.008e-54.034e-5
168187799816599583775431549.80229183449
19 × 1535971
2014-05-141915359717.865e-60.06640.1239
16818779231777477260226231754.364689043709
689043709
2014-11-1816890437090.000229.76555.593

11 Composite Factors:
exponentprime factorscomposite factordigitsbits*
16818779166611216586412140092063.853
16818779330206447678621469375372374.806
168187797796428566212018164972572479.367
168187794862289797528088865042891932788.652
16818779114802407224780392299650082732993.213
168187792275266686801256001095559315528932104.166
168187791635555599394491433551233148259988735113.655
1681877938616727463655767080226253371852560736118.217
1681877976534417418011770010955941114102989955139129.169
168187791126969262979196616949632872774151165241323944143.015
1681877937908495074649241975243675786280003495723781924360
1
51168.019
P-1 results:
No P-1 results for M16818779


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-08T12:40:00Will EdgingtonManual testing??38.850124.07646e-1019.168.49078e-10
2014-05-14T11:24:00TJAOIManual testing??49.802153.40603e-619.167.09435e-6
2014-11-18T12:50:00TJAOIManual testing254255*54.364179.41682e-519.160.000


ECM factoring results:
No ECM results for M16818779


Lucas-Lehmer results:
No L-L results for M16818779


PRP results:
No PRP results for M16818779


P-1 factor-bounds graph:
100
101
102
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
267
255
2
220
230
240
250
260
270
280
290
2100
Last modified: 2014-11-18T12:50:00+00:00